diff options
Diffstat (limited to 'prev/common_windows.c')
| -rw-r--r-- | prev/common_windows.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/prev/common_windows.c b/prev/common_windows.c deleted file mode 100644 index d1447f6..0000000 --- a/prev/common_windows.c +++ /dev/null @@ -1,165 +0,0 @@ -// 17 july 2014 - -#include "winapi_windows.h" -#include "_cgo_export.h" - -LRESULT getWindowTextLen(HWND hwnd) -{ - return SendMessageW(hwnd, WM_GETTEXTLENGTH, 0, 0); -} - -void getWindowText(HWND hwnd, WPARAM n, LPWSTR buf) -{ - SetLastError(0); - if (SendMessageW(hwnd, WM_GETTEXT, n + 1, (LPARAM) buf) != (LRESULT) n) - xpanic("WM_GETTEXT did not copy the correct number of characters out", GetLastError()); -} - -void setWindowText(HWND hwnd, LPWSTR text) -{ - switch (SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM) text)) { - case FALSE: - xpanic("WM_SETTEXT failed", GetLastError()); - } -} - -void updateWindow(HWND hwnd) -{ - if (UpdateWindow(hwnd) == 0) - xpanic("error calling UpdateWindow()", GetLastError()); -} - -void *getWindowData(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *lResult) -{ - CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam; - void *data; - - data = (void *) GetWindowLongPtrW(hwnd, GWLP_USERDATA); - if (data == NULL) { - // the lpParam is available during WM_NCCREATE and WM_CREATE - if (uMsg == WM_NCCREATE) - SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (cs->lpCreateParams)); - // act as if we're not ready yet, even during WM_NCCREATE (nothing important to the switch statement below happens here anyway) - *lResult = DefWindowProcW(hwnd, uMsg, wParam, lParam); - } - return data; -} - -// this is a helper function that takes the logic of determining window classes and puts it all in one place -// there are a number of places where we need to know what window class an arbitrary handle has -// theoretically we could use the class atom to avoid a _wcsicmp() -// however, raymond chen advises against this - http://blogs.msdn.com/b/oldnewthing/archive/2004/10/11/240744.aspx (and we're not in control of the Tab class, before you say anything) -// usage: windowClassOf(hwnd, L"class 1", L"class 2", ..., NULL) -int windowClassOf(HWND hwnd, ...) -{ -// MSDN says 256 is the maximum length of a class name; add a few characters just to be safe (because it doesn't say whether this includes the terminating null character) -#define maxClassName 260 - WCHAR classname[maxClassName + 1]; - va_list ap; - WCHAR *curname; - int i; - - if (GetClassNameW(hwnd, classname, maxClassName) == 0) - xpanic("error getting name of window class in windowClassOf()", GetLastError()); - va_start(ap, hwnd); - i = 0; - for (;;) { - curname = va_arg(ap, WCHAR *); - if (curname == NULL) - break; - if (_wcsicmp(classname, curname) == 0) { - va_end(ap); - return i; - } - i++; - } - // no match - va_end(ap); - return -1; -} - -/* -all container windows (including the message-only window, hence this is not in container_windows.c) have to call the sharedWndProc() to ensure messages go in the right place and control colors are handled properly -*/ - -/* -all controls that have events receive the events themselves through subclasses -to do this, all container windows (including the message-only window; see http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q104069) forward WM_COMMAND to each control with this function, WM_NOTIFY with forwardNotify, etc. -*/ -static LRESULT forwardCommand(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) -{ - HWND control = (HWND) lParam; - - // don't generate an event if the control (if there is one) is unparented (a child of the message-only window) - if (control != NULL && IsChild(msgwin, control) == 0) - return SendMessageW(control, msgCOMMAND, wParam, lParam); - return DefWindowProcW(hwnd, uMsg, wParam, lParam); -} - -static LRESULT forwardNotify(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) -{ - NMHDR *nmhdr = (NMHDR *) lParam; - HWND control = nmhdr->hwndFrom; - - // don't generate an event if the control (if there is one) is unparented (a child of the message-only window) - if (control != NULL && IsChild(msgwin, control) == 0) - return SendMessageW(control, msgNOTIFY, wParam, lParam); - return DefWindowProcW(hwnd, uMsg, wParam, lParam); -} - -BOOL sharedWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT *lResult) -{ - switch (uMsg) { - case WM_COMMAND: - *lResult = forwardCommand(hwnd, uMsg, wParam, lParam); - return TRUE; - case WM_NOTIFY: - *lResult = forwardNotify(hwnd, uMsg, wParam, lParam); - return TRUE; - case WM_CTLCOLORSTATIC: - case WM_CTLCOLORBTN: - // read-only TextFields and Textboxes are exempt - // this is because read-only edit controls count under WM_CTLCOLORSTATIC - if (windowClassOf((HWND) lParam, L"edit", NULL) == 0) - if (textfieldReadOnly((HWND) lParam)) - return FALSE; - if (SetBkMode((HDC) wParam, TRANSPARENT) == 0) - xpanic("error setting transparent background mode to Labels", GetLastError()); - paintControlBackground((HWND) lParam, (HDC) wParam); - *lResult = (LRESULT) hollowBrush; - return TRUE; - } - return FALSE; -} - -void paintControlBackground(HWND hwnd, HDC dc) -{ - HWND parent; - RECT r; - POINT p, pOrig; - - parent = hwnd; - for (;;) { - parent = GetParent(parent); - if (parent == NULL) - xpanic("error getting parent control of control in paintControlBackground()", GetLastError()); - // wine sends these messages early, yay... - if (parent == msgwin) - return; - // skip groupboxes; they're (supposed to be) transparent - if (windowClassOf(parent, L"button", NULL) != 0) - break; - } - if (GetWindowRect(hwnd, &r) == 0) - xpanic("error getting control's window rect in paintControlBackground()", GetLastError()); - // the above is a window rect; convert to client rect - p.x = r.left; - p.y = r.top; - if (ScreenToClient(parent, &p) == 0) - xpanic("error getting client origin of control in paintControlBackground()", GetLastError()); - if (SetWindowOrgEx(dc, p.x, p.y, &pOrig) == 0) - xpanic("error moving window origin in paintControlBackground()", GetLastError()); - SendMessageW(parent, WM_PRINTCLIENT, (WPARAM) dc, PRF_CLIENT); - if (SetWindowOrgEx(dc, pOrig.x, pOrig.y, NULL) == 0) - xpanic("error resetting window origin in paintControlBackground()", GetLastError()); -} |
